Home / 13,673.44-18,869.36-7,385.81

Finding the Fourth Proportional to 13,673.44, 18,869.36 and 7,385.81

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Solution

The fourth proportional to 13,673.44, 18,869.36 and 7,385.81 is: 10,192.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.44 : 18,869.36 = 7,385.81 : x
  2. Step 2: Convert to fraction form
    13,673.44/18,869.36 = 7,385.81/x
  3. Step 3: Cross multiply
    13,673.44x = 18,869.36 × 7,385.81
  4. Step 4: Simplify right side
    13,673.44x = 139,365,559.57
  5. Step 5: Solve for x
    x = 139,365,559.57/13,673.44
  6. Step 6: Final answer
    x = 10,192.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.